formbook | d4d681d100d595cc30c32b127eb1bcc983dec0f3f936bc037c1d5abcfea6ad65

General

Target

PO098765678.exe
Size

59KB
MD5

24a7f8f81ef537691cdf1b6c9deaba07
SHA1

066086ecc09525ebdffed134a7d100fc25a6b6b0
SHA256

d4d681d100d595cc30c32b127eb1bcc983dec0f3f936bc037c1d5abcfea6ad65
SHA512

467632e45b719aea3d20e56aab6acca193a79c160c3c14decd973ed7d2172e59f3f7bb384271d8a7eb3e262e1fbfc2ee8d3d7d1049714e91236a0fddc2acc67b
SSDEEP

1536:ddVdj6XqNKAuDUaQl+kzdC9GiZQWSwi/fUpS/fX/MN2:dpQAuis1Jy///f/Mc

Score

10^/10

formbook xloader zzun loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

zzun

Decoy

JnNtRHyNupy0GqRzAcasu7hb4rc=

Qv593NGLE7p9UNSaVkPXljAJm2QCNnc=

ePArIFWvjkkMgVEVhw4M4Jk=

26rqUwJ7dD0AiDI=

pBAxMHeK741QFw==

kHD7TPt5846pUMTX

56UnjFjHL1i0j659h3LymRnHpQj+SshC

4vKlKHflPqmWXRbrRwfPtrhb4rc=

6LBd4qButFAi

phMzGll8Ue7Fu+inq5cdnPaSugG3

NKswiQGCvZoG5FgsdHEI

rtTHnuUY8M1qVcXV

SOmECrlAt2oGAA==

L1ep9adutFAi

/UE+/AyvE6uEl28weFI=

IP+xMPQxJR4NE6TK

xvW5GN9/rqA5YUoOVt185Sf7Uw==

fRFNW9DhxL6VF7LA

KFYTfkaY741QFw==

W4JGvMBmt2oGAA==

Extracted

Family

xloader

Version

2.9

Campaign

zzun

Decoy

JnNtRHyNupy0GqRzAcasu7hb4rc=

Qv593NGLE7p9UNSaVkPXljAJm2QCNnc=

ePArIFWvjkkMgVEVhw4M4Jk=

26rqUwJ7dD0AiDI=

pBAxMHeK741QFw==

kHD7TPt5846pUMTX

56UnjFjHL1i0j659h3LymRnHpQj+SshC

4vKlKHflPqmWXRbrRwfPtrhb4rc=

6LBd4qButFAi

phMzGll8Ue7Fu+inq5cdnPaSugG3

NKswiQGCvZoG5FgsdHEI

rtTHnuUY8M1qVcXV

SOmECrlAt2oGAA==

L1ep9adutFAi

/UE+/AyvE6uEl28weFI=

IP+xMPQxJR4NE6TK

xvW5GN9/rqA5YUoOVt185Sf7Uw==

fRFNW9DhxL6VF7LA

KFYTfkaY741QFw==

W4JGvMBmt2oGAA==

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader

Xloader payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1676-65-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1676-66-0x000000000041F6F0-mapping.dmp	xloader
behavioral1/memory/1676-68-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/568-76-0x00000000000C0000-0x00000000000EC000-memory.dmp	xloader
behavioral1/memory/568-80-0x00000000000C0000-0x00000000000EC000-memory.dmp	xloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

mstsc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	mstsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\MBDX6TP8O = "C:\\Program Files (x86)\\Mlrwt88fp\\mswnuxv4rh.exe"	mstsc.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

PO098765678.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Control Panel\International\Geo\Nation	PO098765678.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1760 cmd.exe

pid	process
1760	cmd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

PO098765678.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\Nwvmrezq = "\"C:\\Users\\Admin\\AppData\\Roaming\\Nuwuusv\\Nwvmrezq.exe\""	PO098765678.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

PO098765678.exePO098765678.exemstsc.exe

description	pid	process	target process
PID 1500 set thread context of 1676	1500	PO098765678.exe	PO098765678.exe
PID 1676 set thread context of 1360	1676	PO098765678.exe	Explorer.EXE
PID 568 set thread context of 1360	568	mstsc.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

mstsc.exe

description ioc process

File opened for modification C:\Program Files (x86)\Mlrwt88fp\mswnuxv4rh.exe mstsc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Program Files (x86)\Mlrwt88fp\mswnuxv4rh.exe	mstsc.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

mstsc.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2292972927-2705560509-2768824231-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	mstsc.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

powershell.exePO098765678.exemstsc.exe

pid	process
1476	powershell.exe
1676	PO098765678.exe
1676	PO098765678.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

PO098765678.exemstsc.exe

pid process

1676 PO098765678.exe
1676 PO098765678.exe
1676 PO098765678.exe
568 mstsc.exe
568 mstsc.exe
568 mstsc.exe
568 mstsc.exe

pid	process
1676	PO098765678.exe
1676	PO098765678.exe
1676	PO098765678.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe
568	mstsc.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

PO098765678.exepowershell.exePO098765678.exemstsc.exe

description	pid	process
Token: SeDebugPrivilege	1500	PO098765678.exe
Token: SeDebugPrivilege	1476	powershell.exe
Token: SeDebugPrivilege	1676	PO098765678.exe
Token: SeDebugPrivilege	568	mstsc.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

PO098765678.exeExplorer.EXEmstsc.exe

description	pid	process	target process
PID 1500 wrote to memory of 1476	1500	PO098765678.exe	powershell.exe
PID 1500 wrote to memory of 1476	1500	PO098765678.exe	powershell.exe
PID 1500 wrote to memory of 1476	1500	PO098765678.exe	powershell.exe
PID 1500 wrote to memory of 1476	1500	PO098765678.exe	powershell.exe
PID 1500 wrote to memory of 1676	1500	PO098765678.exe	PO098765678.exe
PID 1500 wrote to memory of 1676	1500	PO098765678.exe	PO098765678.exe
PID 1500 wrote to memory of 1676	1500	PO098765678.exe	PO098765678.exe
PID 1500 wrote to memory of 1676	1500	PO098765678.exe	PO098765678.exe
PID 1500 wrote to memory of 1676	1500	PO098765678.exe	PO098765678.exe
PID 1500 wrote to memory of 1676	1500	PO098765678.exe	PO098765678.exe
PID 1500 wrote to memory of 1676	1500	PO098765678.exe	PO098765678.exe
PID 1360 wrote to memory of 568	1360	Explorer.EXE	mstsc.exe
PID 1360 wrote to memory of 568	1360	Explorer.EXE	mstsc.exe
PID 1360 wrote to memory of 568	1360	Explorer.EXE	mstsc.exe
PID 1360 wrote to memory of 568	1360	Explorer.EXE	mstsc.exe
PID 568 wrote to memory of 1760	568	mstsc.exe	cmd.exe
PID 568 wrote to memory of 1760	568	mstsc.exe	cmd.exe
PID 568 wrote to memory of 1760	568	mstsc.exe	cmd.exe
PID 568 wrote to memory of 1760	568	mstsc.exe	cmd.exe
PID 568 wrote to memory of 1572	568	mstsc.exe	Firefox.exe
PID 568 wrote to memory of 1572	568	mstsc.exe	Firefox.exe
PID 568 wrote to memory of 1572	568	mstsc.exe	Firefox.exe
PID 568 wrote to memory of 1572	568	mstsc.exe	Firefox.exe
PID 568 wrote to memory of 1572	568	mstsc.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1360

C:\Users\Admin\AppData\Local\Temp\PO098765678.exe
"C:\Users\Admin\AppData\Local\Temp\PO098765678.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1500

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQA1AA==
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1476

C:\Users\Admin\AppData\Local\Temp\PO098765678.exe
C:\Users\Admin\AppData\Local\Temp\PO098765678.exe
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1676

C:\Windows\SysWOW64\mstsc.exe
"C:\Windows\SysWOW64\mstsc.exe"
2⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:568

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\PO098765678.exe"
3⤵
- Deletes itself
PID:1760

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1572

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/568-80-0x00000000000C0000-0x00000000000EC000-memory.dmp

Filesize
176KB

Download
memory/568-78-0x0000000000940000-0x00000000009D0000-memory.dmp

Filesize
576KB

Download
memory/568-77-0x00000000020A0000-0x00000000023A3000-memory.dmp

Filesize
3.0MB

Download
memory/568-76-0x00000000000C0000-0x00000000000EC000-memory.dmp

Filesize
176KB

Download
memory/568-75-0x0000000000B90000-0x0000000000C94000-memory.dmp

Filesize
1.0MB

Download
memory/568-72-0x0000000000000000-mapping.dmp

Download
memory/1360-71-0x00000000065C0000-0x00000000066B9000-memory.dmp

Filesize
996KB

Download
memory/1360-81-0x0000000006830000-0x0000000006904000-memory.dmp

Filesize
848KB

Download
memory/1360-79-0x0000000006830000-0x0000000006904000-memory.dmp

Filesize
848KB

Download
memory/1476-61-0x000000006F720000-0x000000006FCCB000-memory.dmp

Filesize
5.7MB

Download
memory/1476-58-0x0000000000000000-mapping.dmp

Download
memory/1476-60-0x000000006F720000-0x000000006FCCB000-memory.dmp

Filesize
5.7MB

Download
memory/1500-54-0x0000000000C50000-0x0000000000C64000-memory.dmp

Filesize
80KB

Download
memory/1500-55-0x0000000075B41000-0x0000000075B43000-memory.dmp

Filesize
8KB

Download
memory/1500-56-0x0000000005910000-0x0000000005A0E000-memory.dmp

Filesize
1016KB

Download
memory/1500-57-0x0000000004DE0000-0x0000000004E72000-memory.dmp

Filesize
584KB

Download
memory/1676-70-0x0000000000450000-0x0000000000461000-memory.dmp

Filesize
68KB

Download
memory/1676-63-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1676-65-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1676-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1676-66-0x000000000041F6F0-mapping.dmp

Download
memory/1676-69-0x00000000008B0000-0x0000000000BB3000-memory.dmp

Filesize
3.0MB

Download
memory/1676-68-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1760-74-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads